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A reaction system for preparing carbon fiber by cracking hydrocarbons, its processing method and application

A hydrocarbon and reaction system technology, applied in chemical instruments and methods, chemical/physical processes, fiber chemical characteristics, etc., can solve the problems of difficult product collection and separation, inability to continuously produce, difficult to realize, etc., to achieve collection and Separation is difficult, and the effect of improving decomposition rate and carbon fiber yield

Active Publication Date: 2019-06-14
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems that the existing carbon fiber products produced by catalytic cracking of hydrocarbons cannot be continuously produced, and it is difficult to achieve high hydrocarbon decomposition rate and carbon fiber yield, as well as the difficulty in collecting and separating products, the present invention provides a hydrocarbon Reaction system for preparing carbon fiber by pyrolysis of compound, its treatment method and application

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  • A reaction system for preparing carbon fiber by cracking hydrocarbons, its processing method and application
  • A reaction system for preparing carbon fiber by cracking hydrocarbons, its processing method and application
  • A reaction system for preparing carbon fiber by cracking hydrocarbons, its processing method and application

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Embodiment 1

[0060] Such as figure 2 As shown, this embodiment provides a reaction system for preparing carbon fibers by cracking hydrocarbons, the reaction system includes three two-dimensional fixed-bed reactors 1 connected in series, and one of the two-dimensional fixed-bed reactors 1 is a standby reactor 1-1, the material inlet of each two-dimensional fixed-bed reactor 1 is provided with an inlet three-way diverter valve 2, and the material outlet of each two-dimensional fixed-bed reactor 1 is provided with an outlet three-way diverter valve 3 and a stop valve 4, The reaction material inlet pipeline of the reaction system is connected to the inlet of the two-dimensional fixed-bed reactor 1 through the inlet three-way diverter valve 2, and the reaction material outlet pipeline of the reaction system is connected to the two-dimensional fixed-bed reactor through the outlet three-way diverter valve 3 1 outlet connected.

[0061] Wherein, the two-dimensional fixed-bed reactor 1 is an exte...

Embodiment 2

[0064] This embodiment provides the processing method of the reaction system for preparing carbon fibers by cracking hydrocarbons described in Example 1, specifically as follows:

[0065] In this embodiment, after pressure swing adsorption and deep desulfurization of oil well associated gas, corresponding hydrocarbons are obtained as carbon deposit raw material gas, wherein the content of methane is 93wt%, the content of ethane is 5wt%, and the content of CO 2 It is 2wt%, and the reduced sulfur content is below 1ppm. Nano α-Fe 2 o 3 as a catalyst.

[0066] Feed the feed gas at a flow rate of 5 cm / min into two series-connected two-dimensional fixed-bed reactors 1 except the spare reactor 1-1, contact with the catalyst to carry out hydrocarbon cracking reaction, and control the two-dimensional fixed-bed reactor The temperature of 1 is 730°C, and the reaction time in a single two-dimensional fixed-bed reactor 1 is 30h. After the reaction is completed, when the catalyst in one ...

Embodiment 3

[0071] This embodiment provides a reaction system for preparing carbon fibers by cracking hydrocarbons, the reaction system includes five two-dimensional fixed-bed reactors 1 connected in series, and one of the two-dimensional fixed-bed reactors 1 is a spare reactor 1-1 , the material inlet of each two-dimensional fixed-bed reactor 1 is provided with an inlet three-way diverter valve 2, and the material outlet of each two-dimensional fixed-bed reactor 1 is provided with an outlet three-way diverter valve 3 and a stop valve 4. The reaction material inlet pipeline is connected to the inlet of the two-dimensional fixed-bed reactor 1 through the inlet three-way diverter valve 2, and the reaction material outlet pipeline of the reaction system is connected to the outlet of the two-dimensional fixed-bed reactor 1 through the outlet three-way diverter valve 3 .

[0072] The two-dimensional fixed-bed reactor 1 is provided with 8 layers of catalyst beds, the ratio of the width b to the...

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Abstract

The invention provides a reaction system for preparing carbon fibers through cracking of hydrocarbon compounds, and a processing method and a use thereof. The reaction system comprises at least 3 series-connection two-dimensional fixed bed reactors, a material inlet of each two-dimensional fixed bed reactor is provided with an inlet three-way steering valve, and a material outlet of each two-dimensional fixed bed reactor is provided with an outlet three-way steering valve and a shut-off valve; a reaction material inlet pipeline of the reaction system is connected with an inlet of each two-dimensional fixed bed reactor through the inlet three-way steering valve, and a reaction material outlet pipeline of the reaction system is connected with an outlet of each two-dimensional fixed bed reactor through the outlet three-way steering valve; at least one two-dimensional fixed bed reactor of the two-dimensional fixed bed reactors is a standby reactor. The system and method realize intermittent catalytic carbon deposition continuous reaction by a reactor switching way, also can maintain stable high hydrocarbon compound decomposition rate, and are suitable for various carbon raw materials; and the process is sample.

Description

technical field [0001] The field of catalytic cracking of hydrocarbons of the present invention relates to a reaction system for preparing carbon fibers by cracking hydrocarbons and its treatment method and application, especially relates to a reaction system and its treatment method for large-scale continuous production of carbon nanofibers using switching reaction principles and uses. Background technique [0002] Carbon fiber has low density, high specific modulus, high specific strength and high electrical conductivity. It can be used as catalyst carrier, lithium-ion battery anode, capacitor electrode, high-efficiency adsorbent and structural reinforcement material. It is a hot spot in material research in recent years. The industrial method of producing carbon fiber is the method of gas-phase catalytic pyrolysis of carbon-containing compounds, which is a widely used chemical vapor deposition method. This method uses iron, cobalt, nickel or a mixture thereof as a catalys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/133D01F9/127B01J8/04
CPCB01J8/0446D01F9/1271D01F9/1272D01F9/133
Inventor 余剑郭凤崔彦斌李长明
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI